U.S. federal trademark · Serial No. 79078727 · Reg. No. 4000460
well tools for perforation of well pipe wall aimed at sealing off water and gas leaks in wells, namely, a combined perforating and sealant injection machine equipped with puncher charges for perforation of well pipe walls and an injection module that releases sealants from a canister carried inside the tool into the annulus outside the casing; structural parts for the aforementioned goods
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